First, slice the mushrooms and fry them in a pan over medium heat. I do not use butter or oil for that, but you can use one of them if you want. While the mushrooms are in the pan, you should also cook the noodles in salted water.

You can stir in the tomato sauce as well as the cream after a few minutes when the mushrooms lost some of their liquids and continue simmering for additional 1-2 minutes. Then add some chopped parsley and taste everything. If necessary, you can season the sauce with salt, pepper and/or nutmeg.

Last but not least you mix the cooked noodles with the sauce and you are ready to serve this delicious pasta :D